From: Philippe Gerum <rpm@xenomai.org>
To: Leandro Bucci <guestleandro11@gmail.com>
Cc: xenomai@xenomai.org
Subject: Re: Serial Port
Date: Thu, 11 Feb 2021 13:52:10 +0100 [thread overview]
Message-ID: <87r1lmkbr9.fsf@xenomai.org> (raw)
In-Reply-To: <CAFZ-hKgWry7tMon0SiDSjkAWgamznLzS_dfjLkUzB_n36-JJtQ@mail.gmail.com>
Leandro Bucci via Xenomai <xenomai@xenomai.org> writes:
> hello everyone, I wanted to ask if it is possible to make two devices
> (Raspberry with xenomai) communicate through rs232 serial port, without
> having to go to Linux and do domain switch
There is more than a single PI model, you may want to be more
specific. Anyway, there are two types of uarts on a pi, one or more
PL011 uarts and a single mini-uart which is a 8250. The CPU frequency
affects the baud rate of the mini-uart, so using it implies fixing the
governor to get a stable rate. Although there is a RTDM driver for the
8250, there is none for the the PL011.
Back to your question, the answer is yes, provided you implement a RTDM
driver for the PL011 uart unless the capabilities and requirements of
the mini-uart are fine with you.
--
Philippe.
next prev parent reply other threads:[~2021-02-11 12:52 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-02-11 11:22 Serial Port Leandro Bucci
2021-02-11 12:52 ` Philippe Gerum [this message]
-- strict thread matches above, loose matches on Subject: below --
2007-11-10 21:31 serial port Robert Millan
2007-11-18 11:33 ` Marco Gerards
2007-11-18 11:56 ` Robert Millan
2007-11-18 12:12 ` Vesa Jääskeläinen
2007-11-18 12:24 ` Robert Millan
2007-11-18 12:41 ` Marco Gerards
2007-11-18 12:32 ` Marco Gerards
2007-11-18 12:43 ` Vesa Jääskeläinen
2007-11-19 7:18 ` Daryl Van Humbeck
2007-11-19 17:13 ` Vesa Jääskeläinen
2007-11-18 12:14 ` Marco Gerards
2005-02-17 7:41 Tim Newsham
2005-02-18 1:36 ` Tim Newsham
2004-07-24 15:11 serial port read working but not write Jan-Benedict Glaw
2004-08-03 17:41 ` Serial port suresh shenoy
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